This game is so good I once forgot to sleep! It feels like there is always something to do, whether it's adding a completely new feature to your AI or improving optimisation or analysing some data or whatever you think of or want to have.

Documentation is ok, but could be better.
Community on Slack is fun, active and very helpful.

Before you buy the game, you can try for free the tutorial and simulation mode on screeps webpage and see if it's something you like.